is you lose time and if you want to switch to a sports analogy, right f obama leads by a touchdown, so to speak, in the first quarter it doesn't mean much. but we are in the fourth quarter and romney just maybe fumbled giving obama interception again. nothing impossible but you need a couple of good breaks. >> many predictions fail. nate silver, thank you. >>> coming up, celebrity, power, success and the importance of helping others. my all-star panel at the clinton global initiative. [ male announcer ] every day, thousands of people are choosing advil®. here's one story. i'm sean. i switched to advil® 10 months ago. biking can be really tough on the lower back and your upper thighs. you have some nasty aches and pains. i really like advil® because it takes care of it all. neck ache, shoulder pain and definitely lower back pain. i use advil® because my wife, she's a nurse, she recommended it. [ male announcer ] make the switch. take action. take advil®. and if pain keeps you up, sleep better with advil® pm. and if pain keeps you up, romney: "it's time to stand up to the cheaters"